The reason why divines suppose, that Adam’s state of probation would have continued no longer, is, because these children must then either be supposed to have been confirmed in that state of holiness and happiness, in which they were or not. If they had been confirmed therein, then they would have attained the blessings of this covenant, before Adam had fulfilled the condition thereof. If they had not been confirmed, then it was possible for them to have fallen, and yet for him to have stood; and so his performing the condition of the covenant, would not have procured the blessing thereof for them, which is contrary to the tenor thereof. When our first parents would have been removed from paradise to heaven, and so have attained the perfection of the blessings contained in this covenant, it would be a vain, presumptuous, and unprofitable thing to enquire into. (4.) The last thing observed, in this answer, is what some call the seals annexed to this covenant, as an ordinance designed to confirm their faith therein; and these were the two trees mentioned in Gen. ii. of which the tree of life was more properly called a seal, than the tree of knowledge of good and evil. 1. Concerning the tree of life, several things may be observed, _1st_, It was a single tree, not a _species_ of trees, bearing one sort of fruit, as some suppose: This is evident, because it is expressly said, that it was planted _in the midst of the garden_, Gen. ii. 9. _2dly_, The fruit thereof is said, in the same scripture, to _be pleasant to the sight, and good for food_, as well as that of other trees, which were ordained for the same purpose. It is a vain thing to enquire what sort of fruit it was; and it is better to confess our ignorance hereof, than to pretend to be wise above what is written.